I have a beat up euro reboot. The neck is fine surprisingly, but the body is beat up. Looks like someone took a hammer to it in some spots. I have been able to get most of the dents to come up pretty good though. I plan on repainting it white. Should I sand it all the way down to wood? Or just prep, fill, prime and sand over the original finish? Any one know what they use? Looks thick in some spots. Thanks.